As the clock ticks over from 8:01 PM on Wednesday, 20 February, 2002, time will (for sixty seconds only) read in perfect symmetry. To be more precise: 20:02, 20/02, 2002. It is an event which has only happened once before, and is something which will never be repeated.

The last occasion that time read in such a symmetrical pattern was long before the days of the digital watch (or the 24 hour clock): 10:01 AM, on 10 January, 1001. Because the clock only goes up to 23:59, it is something that will never happen again.